Equivalent & Substitute Parts for PLF1A101MDL4

Part Overview

The PLF1A101MDL4 is a 100 µF, 10 V aluminum polymer capacitor manufactured by Nichicon in the PLF series. This through-hole radial can package component is designed for general-purpose applications requiring stable capacitance and low equivalent series resistance (ESR). The part maintains active product status with full RoHS3 compliance and REACH unaffected certification. Alternative equivalent and substitute parts are identified to support procurement flexibility, design optimization, and supply chain continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	PLF1A101MDL4
Manufacturer	Nichicon
Capacitance	100 µF
Voltage Rating	10 V
Tolerance	±20%
Type	Aluminum Polymer
ESR	25 mOhm
Lifetime	2000 Hrs @ 105°C
Operating Temperature Range	-55°C to 105°C
Ripple Current @ 100 kHz	2.9 A
Lead Spacing	0.098" (2.50 mm)
Package Diameter	0.248" (6.30 mm)
Height	0.413" (10.50 mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of aluminum polymer capacitors is determined by the following critical parameters: capacitance value, voltage rating, tolerance, ESR characteristics, thermal lifetime rating, operating temperature range, physical dimensions (lead spacing and package diameter), and mounting type. All identified substitutes maintain the same capacitance (100 µF) and tolerance (±20%), operate within the same temperature range (-55°C to 105°C), and are rated for 2000 hours at 105°C. Substitutes are grouped into two categories:

Upgrade Substitute (Higher Voltage Rating): PLF1C101MDL4 maintains identical physical dimensions and lead spacing while providing increased voltage rating (16 V) with marginally improved ESR (24 mOhm). This part is suitable for applications requiring higher voltage headroom within the same form factor.

Similar Substitute (Enhanced Performance): RR71A101MDN1 offers superior ESR performance (7 mOhm) and higher ripple current capability (5.6 A @ 100 kHz) at the same 10 V rating. This part features larger physical dimensions (0.315" diameter, 0.512" height) and increased lead spacing (0.138"), requiring PCB layout verification before substitution.

Parameter Comparison

Parameter	PLF1A101MDL4 (Main)	PLF1C101MDL4 (Upgrade)	RR71A101MDN1 (Similar)
Manufacturer	Nichicon	Nichicon	Nichicon
Capacitance	100 µF	100 µF	100 µF
Voltage Rating	10 V	16 V	10 V
Tolerance	±20%	±20%	±20%
Type	Aluminum Polymer	Aluminum Polymer	Aluminum Polymer
ESR	25 mOhm	24 mOhm	7 mOhm
Lifetime @ 105°C	2000 Hrs	2000 Hrs	2000 Hrs
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Ripple Current @ 100 kHz	2.9 A	2.9 A	5.6 A
Lead Spacing	0.098" (2.50 mm)	0.098" (2.50 mm)	0.138" (4.60 mm)
Package Diameter	0.248" (6.30 mm)	0.248" (6.30 mm)	0.315" (8.00 mm)
Height	0.413" (10.50 mm)	0.413" (10.50 mm)	0.512" (13.00 mm)
Mounting Type	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts maintain active product status with full RoHS3 compliance and REACH unaffected certification, ensuring regulatory compliance across all substitution options.

PLF1C101MDL4 is selected when circuit design permits higher voltage operation (16 V) and identical physical footprint is required. This upgrade substitute provides marginal ESR improvement while maintaining the exact same lead spacing and package diameter as the original PLF1A101MDL4, enabling direct PCB substitution without layout modification.

RR71A101MDN1 is selected when superior ESR performance and increased ripple current handling are design requirements. The 7 mOhm ESR and 5.6 A ripple current capability at 100 kHz represent significant performance enhancement over the original 25 mOhm ESR and 2.9 A rating. This substitution requires PCB layout verification due to larger physical dimensions and increased lead spacing (0.138" versus 0.098").

Frequently Asked Questions (FAQ)

Q: Can PLF1C101MDL4 be used as a direct replacement for PLF1A101MDL4?

A: Yes. PLF1C101MDL4 maintains identical lead spacing (0.098"), package diameter (0.248"), and height (0.413"), enabling direct PCB substitution. The higher voltage rating (16 V) is backward compatible with 10 V circuit requirements.

Q: What are the physical constraints when substituting RR71A101MDN1?

A: RR71A101MDN1 features larger dimensions: 0.315" diameter (versus 0.248"), 0.512" height (versus 0.413"), and 0.138" lead spacing (versus 0.098"). PCB layout verification is required to confirm adequate clearance and hole spacing compatibility before substitution.

Q: How does ESR affect component selection?

A: ESR directly impacts ripple current handling and thermal performance. RR71A101MDN1 with 7 mOhm ESR dissipates less heat and supports higher ripple currents (5.6 A @ 100 kHz) compared to PLF1A101MDL4 (25 mOhm, 2.9 A). Selection depends on circuit ripple current requirements and thermal constraints.

Q: Are all substitutes suitable for the same operating temperature range?

A: Yes. All three parts operate across -55°C to 105°C with 2000-hour lifetime rating at 105°C, ensuring thermal compatibility across all substitution scenarios.

Q: What compliance certifications apply to all substitute parts?

A: All parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications.

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